/*********************************************************************
 * Copyright (C) 2002 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.write.biff;

import jxl.Cell;
import jxl.Range;
import jxl.biff.IntegerHelper;
import jxl.biff.Type;
import jxl.biff.WritableRecordData;

import java.util.ArrayList;

/**
 * A number record.  This is stored as 8 bytes, as opposed to the 
 * 4 byte RK record
 */
public class MergedCellsRecord extends WritableRecordData {
    /**
     * The ranges of all the cells which are merged on this sheet
     */
    private ArrayList ranges;

    /**
     * Constructs a merged cell record
     *
     * @param ws the sheet containing the merged cells
     */
    protected MergedCellsRecord(ArrayList mc) {
        super(Type.MERGEDCELLS);

        ranges = mc;
    }

    /**
     * Gets the raw data for output to file
     *
     * @return the data to write to file
     */
    public byte[] getData() {
        byte[] data = new byte[ranges.size() * 8 + 2];

        // Set the number of ranges
        IntegerHelper.getTwoBytes(ranges.size(), data, 0);

        int pos = 2;
        Range range = null;
        for (int i = 0; i < ranges.size(); i++) {
            range = (Range) ranges.get(i);

            // Set the various cell records
            Cell tl = range.getTopLeft();
            Cell br = range.getBottomRight();

            IntegerHelper.getTwoBytes(tl.getRow(), data, pos);
            IntegerHelper.getTwoBytes(br.getRow(), data, pos + 2);
            IntegerHelper.getTwoBytes(tl.getColumn(), data, pos + 4);
            IntegerHelper.getTwoBytes(br.getColumn(), data, pos + 6);

            pos += 8;
        }

        return data;
    }

}







